Four Stabbed at David Guetta Show in Las Vegas

Update (9/21, 2:55 p.m.): Contrary to initial reports, the fight did not break out during Diplo and Skrillex's set. The Las Vegas Police Department confirmed to Pitchfork that the incident took place September 7 around 3 a.m during a David Guetta show that began the night before. Diplo contested the initial report, as Thump points out.

On September 7 (Labor Day), Diplo and Skrillex performed at XS Nightclub in Las Vegas. During that show, a fight broke out where four people were reportedly stabbed, TMZ reports.

According to TMZ, the injuries were serious, but not fatal. The fight, which included about 20 people, reportedly led to one arrest on three counts of attempted murder. TMZ's sources indicated that the fight was somehow gang-related.